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Saturday, April 15, 2017

Sri Parthasarathi Brahmothsavam 2017 : day 4 - Chandra Prabhai

Today, 15th Apr 2o17 is day 4 of Brahmothsavam of Sri
Parthasarathi - it was the radiant Surya prabhai in the morning and the
pleasant ‘Chandra prabhai’ in the evening.

The moon is the easiest
celestial object found in the night sky — when it is there. One
that is visible to naked eye. Earth's only natural satellite hovers above
us bright and round until it seemingly disappears for a few nights. The rhythm
of the moon's phases has guided humanity for millennia — for instance, calendar
months are roughly equal to the time it takes to go from one full moon to the
next. Moon phases and the moon's orbit are mysteries to many. For example, the
moon always shows us the same face. That happens because it takes 27.3 days both
to rotate on its axis and to orbit Earth. We see either the full moon, half
moon or no moon (new moon) because the moon reflects sunlight. How much of it
we see depends on the moon's position in relation to Earth and the sun.

Moon’s influence on
Earth's cycles, notably tides, has been charted by many cultures in many ages.
The moon moderates Earth's wobble on its axis, leading to a relatively stable
climate over billions of years. The Moon (Lunar) is one of the largest
natural satellites in the Solar System, and, among planetary satellites, the
largest relative to the size of the planet it orbits (its primary). The Moon is
thought to have formed approximately 4.5 billion years ago, not long after
Earth. There are several hypotheses for its origin; the most widely accepted
explanation is that the Moon formed from the debris left over after a giant
impact between Earth and a Mars-sized body called Theia.

Here are some
photos taken during the evening Chandra Prabhai purappadu.

Adiyen Srinivasa dhasan

More on Moon : A tiny moon of Saturn has most of the
conditions necessary for life, Nasa announced couple of days back, unveiling a discovery
from an underground ocean that makes the world a leading candidate for
organisms as humans know them. Scientists stressed that the discovery on a moon
named Enceladus is not evidence that life has in fact developed on another
world, but they have managed to establish the existence of the water, chemistry
and energy sources that are necessary for it.

“We now know that
Enceladus has almost all of the ingredients that you need to support life as we
know it on Earth,” said a project
scientist who said the finding essentially confirmed vents on the moon’s
seafloor. Another one involved in the project
added, the discovery showed that the moon’s ocean
contained a potential chemical feast for microbes. “We have made the first
calorie count on an alien ocean.” Beneath its frozen surface, Enceladus has a
saltwater ocean, and the hydrogen – produced in a reaction between heated water
and rocks – indicates that the moon has active energy sources, possibly akin to
the undersea vents that teem with life on planet Earth.